INDEX 
Co_>— 
477 
PAGE 
Quantitative microscopic analysis. 198 
use of gums in. 204 
Quartz object slides. 151 
refractive index of. 243 
Radiants for microscopic illumination. 158 
Reagent cases. 146 
containers. 145 
Reagents, methods of applying. 298 
Reference books. 463 
Reflected light illumination. 29 
Refractive index, biaxial crystals. 236 
determination of. 226 
liquids for.244-246 
of typical crystals.247, 248 
of liquids. 238 
uniaxial crystals. 236 
Reichert metallurgical microscope. 94 
Resolving power of objectives. 7 
with dark field illuminators. 41 
Rotating apparatus. 141 
Samples for quantitative analysis. 203 
Sedimentation glasses. 165 
Sedgwick-Rafter counting cell. 207 
Selenite plate. 262 
Shop microscopes. loi 
Sieves. 171 
calibration of. 194 
Silicates, detection of. 427 
Silver, common salts. 376 
detection by arsenic acid. 383 
bichromates. 380 
hydrochloric acid. 377 
Silverman illuminator. 33 
Skeleton crystals. 252 
Slit ultramicroscope. 107 
path of rays in cell of. 112 
Sodium, common salts. 319 
detection by bismuth sulphate. 322 
silicofluorides. 3 24 
uranyl acetate. 320 
Soft metals, preparing for study. 435 
Solubility, testing for. 276 
Spatulas for chemical microscopy. 148 
Sphero-crystals. 251 
Spherulites. 251 
